Improvement in processes for distilling rosin-oil



UNITED STATES PATENT OFFICE.

HALVOR HALVORSON, OF BOSTON, MASSACHUSETTS,ASSIGNOR TO B.

' HALVORSON AND no. T. HEARD.

lMPROVEM ENTlN PROCESSES FOR DlSTlLLlNG ROSlN-OIL.

Specification forming part of Letters Patent Nth 10,849, dated May'2, 1851.

To all whom'it may concern:

Be it known that I, HALVOR HALVORSON, of Boston, in the countyot Suii'ollr and State of M assachusctts, have invented or discovered a new and uscl'ul Improvement in the Manufactu're of Oil from Rosin; and I- do hereby. declare that the same is described in the following specification.

The manner iTi which I produce oil t'rom rosin consists in combining argil or clay with rosin in, or about in, the proportion of one part, by weight, of the rosin to five, or about five, parts, by weight, of the clay or argil, and subsequently subjecting the mixture to distillalion in a proper distilling apparatus. The liquid result is a fine clear or slightlycolored oil, the proportion of which, by wt ight, to .the rosinis not far .from eighty per cent.

The uses of this new product in the arts lhave not as yet fully determined; but I have good reason to believe that either before or after undergoing a purifying process it may he can ployed to great advantage for the purposes of illumination, and for manypurposes which common essential oil or spirits of turpentine are used.

The advantage of my discovery to those parts of the country where pine forests areresorted to for the purpose of procuring turpenline may be expected to be very great, as it is well known that the destruction of the pines for such purpose is taking place to a very great extent, and in case my rosin-oil can be used for most of the purposes to which common spirits of turpentine are devoted it must very much afl'ect or lessen the number of trees destroyed in order to procure the native turpentine.

I am aware that it has been comnion in the distillation of rosin to mix it with alkalies,

alkaline ealfths,or-inetallic oxides ;.-also, that resin and oil have been distilled from bricks and various other insoluble matters. I therefore do not claim any such mixtures of rosin for the purposes of distillation, as theydo not have a specific action in the process that results from the employment of clay. I have found-that in the use of clay no pitch residuum is left in the retort or distilling-vessel after distillation, whereas with any of the other matters above alluded to as having been mixed with the rosin I have found a large residuum of 'pitch- In testimony whereof I have hereunto set my signature this 23d dayof May, A. D. 1853.

H. HALVORSON. Witnesses:

R. H. EDDY, FRANCIS GOULD. 

